U.S. directory of environmental sources
By: United States International Environmental Referral Center, national focal point of the United Nations Environment Program/International Referral System.
Edition: 2d ed. --
Publisher: Office of Administration, Assistant Administrator for Planning & Management, U.S. Environmental Protection Agency
Published: 1977
Place of publication: Washington
Language: eng
Number of pages: 496
Subjects: United States International Environmental Center -- Directories.; Environmental protection -- United States -- Directories.
Notes: "EPA-840-77-009."

First ed. published in 1976 under title: United States directory of sources.